Thicker isn’t always better.
Thick yoga mats (6-15mm) offer crucial cushioning for sensitive knees and wrists during pilates, floor work, and kneeling exercises. However, that extra softness can compromise stability, making them a poor choice for balance poses and most traditional yoga classes. The sweet spot for many is 8mm for home pilates. In the UK, expect to spend between £15 for a basic budget model and £110 for a premium, lifelong investment.
Let’s clear something up: not all yoga mats should be thick. If you’re shopping for a mat because your knees protest during lunges or your wrists ache after planks, you’re right to look for more cushion. But choosing a mat that’s too soft for your main activity can create new problems. This guide cuts through the noise. We’ll explain exactly what ‘thick’ means for a mat, when it’s a joint-saving hero, when it’s a wobbly villain, and which UK brands actually deliver on comfort and stability.
What “Thick” Actually Means in Yoga Mat Terms
The yoga mat market uses ‘thick’ loosely, so let’s define the scale. At the thin end, you have 1-2mm travel mats—portable but minimal padding. The 3mm mat is a favourite for dynamic, sweat-wicking flow styles. Then there’s the standard 4-5mm thickness, which the British Wheel of Yoga often cites as a versatile baseline for most practices. This is where traditional yoga lives.
Moving into what we’re discussing here, a ‘thick’ mat typically starts at 6mm and goes up to 8mm, designed expressly for cushioning joints during pilates, floor-based strength work, and restorative poses. Beyond that, 10-15mm mats are often categorised as general exercise or fitness mats. While they provide maximum padding, the increased foam density often sacrifices the stable grip needed for standing poses, re-categorising them more for gym floor work than yoga.
| Thickness | Best for ✓ | Notes |
|---|---|---|
| 1-2mm | Travel, compact practice | Ultra-portable, minimal protection. |
| 3mm | Dynamic flow, vinyasa | Good ground connection, less cushion. |
| 4-5mm | Standard yoga (most styles) | British Wheel of Yoga recommended balance. |
| 6-8mm | Pilates, joint-protective work | Sweet spot for floor comfort. |
| 10-15mm | Exercise mats (NOT yoga) | Maximum cushion, poor stability for yoga. |
When a Thick Mat is the Right Choice
A thicker mat is your best friend in several specific scenarios. If you experience knee or wrist pain during tabletop poses like cat-cow, or when kneeling, the extra millimetres of cushioning between your joints and a hard floor are non-negotiable. It’s also the correct tool for pilates, which involves extensive floor work—rolling, bridging, and lying supine—where spine and tailbone comfort is paramount.
For home strength training that involves floor-based moves like planks, rolling, or sitting stretches, a thick mat defines your workout space and adds comfort. It’s also highly recommended if you’re exercising directly on a hardwood or tiled floor with no rug underneath. Finally, for restorative or pregnancy yoga, where poses are held for longer periods and spinal comfort is key, a mat in the 6-8mm range provides essential support without being overly bulky.
When physiotherapists recommend thicker
NHS guidelines often recommend cushioned exercise surfaces for patients with osteoarthritis or recovering from injury. A thick mat reduces impact forces during floor work, making therapeutic exercises more accessible and consistent. This is particularly relevant for home-based rehabilitation where hard floors are common.
- Knee pain in tabletop poses
- Pilates floor work
- Home strength training on hardwood
When a Thick Mat is the WRONG Choice
Honesty is key: thick mats have clear drawbacks. Their primary enemy is balance. A softer, spongier surface creates an unstable base, making standing balance poses like tree or warrior III significantly harder and potentially less safe as you fight to stabilise your ankles.
They are also ill-suited for fast-paced practices. If you’re flowing through sun salutations in a vinyasa or power yoga class, you need a firm connection to the floor for quick, stable transitions. A thick mat can feel sluggish and absorb too much energy. Consider practicality too: if you need to roll your mat tightly for studio storage or for travel, a bulky 10mm mat won’t cooperate. Lastly, for hot yoga, a softer surface can amplify any inherent slipperiness, as your hands and feet may sink in, reducing traction.
| ✅ Thick mat WINS | ⚠️ Thick mat FAILS |
|---|---|
| Pilates | Standing balance poses |
| Sore knees/wrists | Vinyasa/power yoga |
| Hardwood floors | Hot yoga (slip risk) |
| Kneeling-heavy routines | Studio class storage |
| Restorative yoga | Travel |
| Pregnancy yoga |
The 6 Best Thick Yoga Mats for UK Buyers
Here are trusted options available in the UK, balancing thickness, function, and budget.
Liforme Move 4.2mm (~£100)
Material: Natural rubber + polyurethane
Best for: Those needing joint protection without sacrificing yoga stability
UK availability: Liforme direct, John Lewis, Sweaty Betty
Lululemon Reversible 5mm (~£90)
Material: Natural rubber + polyurethane
Best for: All-rounders who do yoga and pilates
UK availability: Lululemon stores & online
Gaiam 6mm Premium Print (~£35-45)
Material: PVC
Best for: Affordable cushioning for home workouts
UK availability: Amazon UK, Argos, Sports Direct
Decathlon Domyos Comfort 8mm (~£15-25)
Material: Foam
Best for: Budget pilates and home fitness
UK availability: Decathlon stores & online
JLL Fitness 10mm NBR (~£20-30)
Material: NBR foam
Best for: Maximum cushion for floor-based exercise
UK availability: Amazon UK, JLL direct, Argos
Manduka PRO 6mm (~£110)
Material: Dense PVC (closed-cell)
Best for: Lifetime investment with firm support
UK availability: Manduka UK, John Lewis, independent yoga shops
Material + Thickness Combos That Actually Work
Pairing the right material with thickness is crucial. For a 6-8mm mat, **natural rubber** is often the gold standard. It provides excellent grip (even when wet) and a resilient, non-squishy cushion that doesn’t compromise stability. It’s a premium choice.
For budget-friendly thick mats (8-10mm), **TPE (Thermoplastic Elastomer)** is common. It’s lighter than rubber and provides good cushioning, though it may wear faster. At the thickest end (10-15mm), **NBR foam** dominates. It’s superb for pure cushioning and impact absorption but prioritises comfort over grip.
A key warning: be very cautious of very thick **PVC** mats. PVC can be slippery, and this risk is amplified on a soft, sinking surface, making them a poor choice for any practice requiring secure footing.
5 Buying Pitfalls to Avoid
- Avoid very thick PVC (slipping amplified by softness)
- Don’t buy 10mm+ for yoga classes (instructors hate them)
- Skip “memory foam” yoga mats (no support for proper alignment)
- Don’t pay £60+ for unbranded thick foam (Decathlon £20 = same product)
- Two-mat setup beats compromise mat if budget allows
The Honest Decision Matrix
Use this quick rule of thumb.
| Your activity | Recommended thickness ✓ |
|---|---|
| Most yoga (vinyasa, hot, studio) | 4-5mm |
| All-rounder (yoga + occasional pilates) | 6mm |
| Pilates / sensitive joints | 8mm |
| Home strength + floor work | 10mm+ |
| Two-mat setup (if budget allows) | 5mm + 8mm |
What Readers Are Telling Us
“Switched to 8mm Decathlon Domyos for home pilates. Knees stopped hurting in week 1.”
★★★★★
“Bought 10mm thick mat for vinyasa — wobbled through tree pose. Had to swap to 5mm.”
★★☆☆☆
“Lululemon Reversible 5mm = the right balance. Pricey but lasts.”
★★★★★
“Two-mat setup at home: 5mm Manduka for yoga, 8mm Gaiam for pilates. Best decision.”
★★★★★
Frequently Asked Questions
Is a 10mm yoga mat too thick?
For yoga, yes. A 10mm mat is too soft and unstable for safe standing poses and balances. It’s best classified as an exercise mat for floor-based pilates, stretching, and strength work where cushioning is the only priority.
What’s the best thickness for pilates?
For pilates, 8mm is often the ideal thickness. It provides substantial cushioning for the spine, tailbone, and knees during rolling and kneeling exercises without being so soft that it undermines core stability during moves like the plank.
Are thick yoga mats bad for balance?
Yes, typically. A thicker, softer mat compresses underfoot, creating a wobbly, unstable surface. This makes it much harder to stabilise your ankles and engage the small stabiliser muscles needed for standing balance poses.
Can I use a thick mat for hot yoga?
It’s not recommended. Hot yoga requires exceptional grip, and a softer mat can allow your hands and feet to sink, reducing surface contact and traction. A thinner, high-grip mat (4-5mm) is a safer choice.
Do thick yoga mats hurt your back?
They shouldn’t if used correctly. For floor work, they protect the spine. However, if used for standing yoga, the instability can force your back muscles to work overtime to stabilise you, potentially causing strain. Use the right mat for the right activity.
How thick should a yoga mat be for bad knees?
For bad knees, look for at least 6mm of cushioning, with 8mm being preferable for kneeling exercises. Ensure the mat is firm enough to provide support, not just soft foam. A dense rubber 6mm mat can often outperform a cheap, squishy 10mm one.
Match thickness to activity. 4-5mm yoga, 8mm pilates, 10mm+ exercise.
Choosing a thick yoga mat isn’t about getting the most padding for your pound; it’s about matching the tool to the task. For pilates, floor work, and protecting sensitive joints, a mat between 6mm and 8mm is a worthwhile investment in your comfort and consistency. For traditional yoga, stability must come first.
By understanding the real trade-offs, you can pick a mat that supports your practice—literally—for years to come. Always prioritise your primary activity, and your joints will thank you.
Published: 26 April 2026 | Last reviewed: 26 April 2026 | Walton Surgery
